Song is a high-pitched, emphatic, often repeated chu-chu-chu-chu (Wetmore and Swales 1931). During breeding season, they also give a soft, whistling warble (Latta et al. 2006). Latta et al. (2002) describe the contact note among a breeding pair as a chit-chit, while Benkman (1992) similarly described the sound of begging juveniles as a single chit. Latta et al. (2002) describe a chut call given by an adult male as it was attacked by a Merlin.
Males sing near the nest while the female nest-builds, but his song is low and quiet. The pair will give soft chit-chit, chit-chit notes to each other near and on the nest (Latta et al. 2002).